Binder and cutter mechanism for knitting machines



Sept. 19, 1939. H. McADAMs 2,173,788

BINDER AND CUTTER MECHANISM FOR KNITTING MACHINES Filed Feb. 1l, 1938 INVENTOR.

Har'rw- I MBAdan-LE ATTORN EYS,

Patented Sept. 19, 1939 PATENT oFFicE BINDER AND CUTTER, MECHAN'ISM FOB KNITTING MACHINES Harry McAdams, Reading, Pa., assignor to The.

Nolde and Horst Company,

corporation Application February 11,1938, serial No. 190,065

13 Claims.

'I'his invention relates to improvements in binder and cutter mechanisms for knitting machines. It is a, continuation in part of applications Serial Nos. 730,666, iiled June 14, 1934, now Patent No.

5 2,164,119, and 143,366, filed May 18, 1937.

The primary object of this invention is Athe provision of an improved binder arrangement for a yarn binding and cutting mechanism of a knitting machine. l

l In the drawing, wherein for the purpose oi illustration is shown a preferred embodiment of the invention,

Figure 1 is a perspective view of the improved binder and cutter as mounted upon a knitting l5 machine showing it just prior to a binding and cutting action upon the yarns.

Figure 2 is a View of the binder and cutter showing it with the yarns clamped and bound in it.

Figures 3, 4 and 5 are cross sections taken on their respective lines shown in'Figures 1 and 2 of the drawing.

Figure 6 is a cross sectional view' similar to Figure 5, but showing the arrangement o1' binders and cutter ,just prior to the tlnal clamping and cutting action. e r

Figures 7, 8 and 9 show the various positions of the intermediatebinder in open and closed positionsand with respect to diiierent gauge yarns to be bound thereby.

In the drawingrwherein similar reference characters designate corresponding parts throughout the several views, the letter T designates the improved cutter and binder, which is mounted as an attachment upon the latch ring |39 of aknitting machine for the purpose of cutting and binding yarns 93 and 94, tively by suitable iingers 0I and 92 which may be controlled in the usual manner of! oi pattern mechanism such as is set iorth in my above p identiiied application Serial No. 730,666. While the yarns 93 and 94- in that machine are located at the auxiliary ieed of the nknitting machine the improved binder and cutter T may serve its pur- ,5 pose in connection with the severing and binding of any yarns. The yarns 93 and Si* in the knitting machine of application Ser. No. '730,666 are out of action during knitting of the heel and toe.

These yarns may be of dierent gauges. Thus,

w yarn 93 may be 36/2 mercerizecl and yarn 94* may be 100 denier-silk. 4

'I'he improved binder and cutter includes a safety factor in the secure binding of theyarn without injury or liability of breakage thereof in which is not found in prior binders and cutters.

These yarns are fed respece The improved binder and cutter consists of a supporting frame |00 fixediy secured upon a block which may be detachably connected` to any part of the knitting machine. In the' present invention it is connected upon the top of the latch o ring. A vertically slidable frame "3 is in turn carried in the frame 'IML It has attached thereto a horizontal bar lli, which is channeled on one side for sldably receiving a reciprocating bar y |06. At its inner end the bar l, which is I0 secured to the vertically slidable frame 3, as by screws |01, shown in Figures 3 and 9, is provided with a depending cutterand binder'base bar lill, which isv shown in cross section in Figure 5. Portion 4in has a sharp cutter edge lll, l5 and upon its side facing the inner periphery of the latch ring lt is provided Vwith a binder groove M2. Upon vertical movement of the slidable trame portion 403 the mounting p0rtions lli and lil move therewith. The said parts are limited zo in their downward movement by an adjustable screw IIS. shown in Figure 3, so that the lower cutting and binding end o! the cutter and binder mechanism mayl be lowered or elevated to any desirable level suitable for the purpose for which '25 the cutter and bindermechanism is adapted. in any particular case. l

Cutting and binding arms M6 and Ill respectively are pivotally attached upon a pin or shaft M8 at `opposite sides of the cutting and binding 30 hase `portion lil of the frame. They are mov ,ab1e, scissors-like, with respect to the depending base portion IN. and the cutter arm 6 is provided with a sharp edge 420 cooperating with the edge lli to sever yarns as vthe cutter barlli is 35 moved from the position shown in Figure 1 to the position in Figure 2. The binder arm "1 on the other hand, is provided with a rounded edge 42| in a cooperating relation with an adt jacent rounded edge 422 of the bar III to squeeze o the yarns 93 and M* therebetween in a bindin relation, in contrast to a. cutting action. A

spring, shown at |26 in Figure 4 of the drawing,

mounted on the pivot pin M8 assists in maintaining the cutting and binding arms lli and III in .proper position against the opposite sides of the cutting and binding bar lill. The slide bar lill is connected at its 'forward end to the upper ends ot the cutter and binder bars lli and lll' by pin 421, on a nxed axis, so that forward slidini;r of the 5 bar 406 will open the arms M6 and l1 with respect to the bar lill, and rearward siidinl o! the bar l" will enable spring l to pull the arms lli and M1 into cutting and binding relation with the yarns. Normally a cam operatedshown in Figures 'l and 9 oi the drawing.

lever operated oi! of suitable pattern mechanism engages pin 446 and holds the bar 40B inforward lbiosition, in order to open the binder and cutter ars. l An auxiliary binding arm 436 is loosely pivoted `upon the pivot pin 4I6. It has an opening 436a therein which admits oi. horizontal loose play upon pin 4I8. Below the pivot 4IB it operates inthe binder groove 4|! oi' the bar 4Min order to more securely bind the yarns againstirelease, as is shown in Figures 5, 6 and 9 oi. the drawing. The upper end of the auxiliary binder arm 436 is spring urged at 431 into the binding position As is shown in Figure 2 the portion of the auxiliary binder arm 435 above the pin 4I3 is provided with a large opening 436 which will permit the spring 431 to wholly bring about the binding action upon the yarns. f

It will be noted from Figure 7 of the drawing that the i'acing surfaces o! the binding arm 436 and the bar 4I6 are relatively sloped, which in cooperation with the loose play which the binderl 436 has on its pivot pins enables the binder arm to clamp both coarse and iine yarns. Ordinarily the main binding arm 4 i l will not clamp the finer of the yarns, due to its spread action, but the other binding ann 436 is enabled to force the coarse and tine yarns into the channel groove of the binder base bar 4NI, and because of the arrangement of binding surfaces and loose play o! the binder arm it will properly clamp these yarns.

It will be particularly noted from Figure 6 of the drawing that the binden arm 436 closes ahead of the cutter knife 4i6, and also ahead of the other binder arm 4 i 1. 'I'his is done to prevent the yarns from back-lashing'and getting out of the binder when cut oil by the cutter blade.

The loose pivoting of the binder arm 436 enables that arm to be closed without a snap, since the action is not too positive, some motion being lost due to its loose pivoting during return ot the binder iro'm its open position shown in Figure 8 to its binding position shown in Figure 9. 'I'his eliminates cutting of the yarns.

. It should also be noted that the binder arm 4 I1 forces the yarns to a position inside oi the needle line. Ii' the binder arm 436 were the only one provided the yarn would be held suspended directly over the heads of the needles and when the yarn clamping nger is put out of action the yarn or yarns would be liable to ride on the heads of the needles for a short space; causing holes to appear in the fabric. With the provision of the binder arm 4II, shown in the position in Figure 5, the yarn is held `to the inside of the needle line and this enables the yarn feed linger when it goes into action to accurately knife the I binding an/d cutting purpose. In' the feed of heavy and light yarns, one instance where it could be be used would be in making a plated stocking on a two-.feed machine having a wrap stripe yarn.`

The heavier yarn 93 would be the lining yarn and the liner yarn 94 would be the plating yarn.

Various changes in the shape, size, and arrangement of parts may be made to the form oi? invention herein shown and described, without departing from the spirit of the invention or the scope ci the claims.

yarn being independently movable so far as the n binding action is concerned and a single means to release said cutter and said binders.

2. In cutting the binding mechanism for threads or yarns and the like the combination of means for cutting a thread or yarn. means to n bind the thread or yarn at the time oi the cutting` operation. an auxiliary binding means cooperating with the iirst mentioned binding means to additionally bind the thread or yarn, said two binding means which cooperate in binding the 2 yarn being independently movable and having independent spring means to actuate them in their binding effect upon the thread or yarn and a single means torelease said cutter and said binders. 2

3. In a binder and cutter the combination of` a cutter, a binder. a second binder, and means controlling said-binders including a lost motion connection so that they may take independent binding eilect on the same yarns. 3

4. In a yarn binder for knitting machines the combination of a main yarn binder, an auxiliary yarn binder for binding the same yarn as the main yarn binder. and means actuating said binders so that one takes binding effect ahead of 3 the other.

5. In a yarn binding mechanism for knitting machines and the like the combination of a main binder, means for actuating said main binder to a yarn binding position, an auxiliary binder for 4 binding the same yarns as the main binder, and means i'or independently actuating the auxiliary binder to a yarn binding position.

6. In yarn binding and cutting mechanism the combination of a main binder for binding a. given 4 yarn, an auxiliary binder for binding said given yarn, a yarn cutter, and means for actuating said binders to a yarn binding position so that at least one of them takes binding effect upon said given yarn ahead of the cutter. 5

7. In a yarn binding and cutting mechanism the combination of a main binder for binding a given yarn, an auxiliary binder for binding said 'given yarn, a yarn cutter, and means for actuating one of said binders so that it takes binding g eiect upon said given yarn ahead of the other binder and ahead of the cutter.

8. Yarn bindingmechanism for knitting machines comprising two independently movable yarn binding devices for binding the same yarn and having means for actuating them to an open yarn release position, and independent spring means for each of said binders for independently actuating them to a yarn binding position.

9. Yarn binding mechanism for knitting machines comprising two independently movable yarn binding devices for binding the same' yarn having pattern controlled means `for'actuating them to an open yarn release position, independent spring means for each of said binders for independently actuating them to a yarn binding position, and cutting means associated with the binders.

10. In yarn binding mechanism for 'knitting machines and the like the combination of a f ananas binding base having a yarn binding groove therein, a movable yarn binder operable against a side of said base for binding yarn, a movable yarn binder operable in the groove of said base for thc additional binding ci the same yarn or yarns, cutting means operable at the other side of the base from the rst mentioned binder :lor the cutting of said yarns, and means actuating the second binder so 4that it takes binding eiiect upon the yarns ahead oi the cutting action.

1i. In yarn binding mechanism for knitting machines and the like the combination oi a binding base having a yarn binding groove therein. a movable yarn binder operable against a side of said base for binding yarn. a movable yarn binder operable in the groove oi said base ior the additional binding of the same yarn or yarns, cutting means operable at the other side of the base from Patent No. 2,175,788.

`it takes binding efiectupon the iirst mentioned binder for the cutting of said yarns. means actuating the second binder so that A the yarns ahead oi the cutting action and rst mentioned binder.

12. In a yarn binding and cutting mechanism the combination oia frame, a pair of pivoted binders on the frame having relatively independent pivot motion thereon, independent means for normally actuating them to a yarn binding position with respect to said frame. and a single means for opening said binders.

13. In a binding mechanism the combination of a binder frame, a binder pivoted n the frame. means including a lost-motion connection Ior moving the binder to an open position. and spring means normally urging said binder to a clamping position with respect to said frame.

HARRY McADAMS.

4CERTIFIGii'IS' 0F GORRECTIGN.

September 19, 1939.

HARRY HcADAlIS.

It is hereby certified that error appears in the printed` specification of the above numbered patent requiring correction as follows: Page 2, second column, 1ine15, claim 2, for the article "the" read and; and that the said LettersPatent, should be read with `this correction therein that the same may conform to `the record of the case in the Patent Office.

Signed and sealed this 2lith day of October, A. D. 1939.

(seal) Henry Van Arsda1e,

-Acting Commissioner of Patents.

ananas binding base having a yarn binding groove therein, a movable yarn binder operable against a side of said base for binding yarn, a movable yarn binder operable in the groove of said base for thc additional binding ci the same yarn or yarns, cutting means operable at the other side of the base from the rst mentioned binder :lor the cutting of said yarns, and means actuating the second binder so 4that it takes binding eiiect upon the yarns ahead oi the cutting action.

1i. In yarn binding mechanism for knitting machines and the like the combination oi a binding base having a yarn binding groove therein. a movable yarn binder operable against a side of said base for binding yarn. a movable yarn binder operable in the groove oi said base ior the additional binding of the same yarn or yarns, cutting means operable at the other side of the base from Patent No. 2,175,788.

`it takes binding efiectupon the iirst mentioned binder for the cutting of said yarns. means actuating the second binder so that A the yarns ahead oi the cutting action and rst mentioned binder.

12. In a yarn binding and cutting mechanism the combination oia frame, a pair of pivoted binders on the frame having relatively independent pivot motion thereon, independent means for normally actuating them to a yarn binding position with respect to said frame. and a single means for opening said binders.

13. In a binding mechanism the combination of a binder frame, a binder pivoted n the frame. means including a lost-motion connection Ior moving the binder to an open position. and spring means normally urging said binder to a clamping position with respect to said frame.

HARRY McADAMS.

4CERTIFIGii'IS' 0F GORRECTIGN.

September 19, 1939.

HARRY HcADAlIS.

It is hereby certified that error appears in the printed` specification of the above numbered patent requiring correction as follows: Page 2, second column, 1ine15, claim 2, for the article "the" read and; and that the said LettersPatent, should be read with `this correction therein that the same may conform to `the record of the case in the Patent Office.

Signed and sealed this 2lith day of October, A. D. 1939.

(seal) Henry Van Arsda1e,

-Acting Commissioner of Patents. 

